package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.DishDTO;
import com.sky.dto.DishPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.entity.DishFlavor;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.DishFlavorMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealDishMapper;
import com.sky.result.PageResult;
import com.sky.result.Result;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import io.swagger.v3.oas.annotations.servers.Server;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import javax.security.auth.DestroyFailedException;
import java.util.ArrayList;
import java.util.List;

/**
 * ClassName: DishServiceImpl
 * Package: com.sky.service.impl
 * Description:
 *
 * @Author 臧洁
 * @Create 2025/3/26 17:21
 * @Version 1.0
 */
@Service
@Slf4j
public class DishServiceImpl implements DishService {
    @Autowired
    private DishMapper dishMapper;

    @Autowired
    private DishFlavorMapper dishFlavorMapper;

    @Autowired
    private SetmealDishMapper setmealDishMapper;
    /**
     * 新增菜品和对象口味
     * @param dishDTO
     */
    @Transactional
    public void saveWithFlavors(DishDTO dishDTO) {

        Dish dish=new Dish();
        Long dishId = dish.getId();
        BeanUtils.copyProperties(dishDTO,dish);
        //向菜品添加一条数据
        dishMapper.insert(dish);

        //插入多种口味数据
        List<DishFlavor> flavors = dishDTO.getFlavors();
        if(flavors !=null && flavors.size()>0){
            flavors.forEach(dishFlavor -> dishFlavor.setDishId(dishId));
            dishFlavorMapper.insertBatch(flavors);
        }
    }

    /**
     * 菜品分页查询
     *
     * @return
     */
    @Override
    public PageResult pageQuery(DishPageQueryDTO dishPageQueryDTO) {
        PageHelper.startPage(dishPageQueryDTO.getPage(),dishPageQueryDTO.getPageSize());
        Page<DishVO> page=dishMapper.pageQuery(dishPageQueryDTO);
        return new PageResult(page.getTotal(),page.getResult());
    }

    /**
     * 批量删除菜品
     * @param ids
     */
    @Transactional
    public void deleteBatch(List<Long> ids) {
        //判断一下菜品是否在起售
        for(Long id:ids){
            Dish dish=dishMapper.getById(id);
            if(dish.getStatus()== StatusConstant.ENABLE){
                throw new DeletionNotAllowedException(MessageConstant.DISH_ON_SALE);
            }
        }
        //判断一下菜品是否被套餐关联
        List<Long> setmealIds = setmealDishMapper.getSetmealIdsByDishIds(ids);
        if(setmealIds !=null && setmealIds.size() >0){
            //说明菜品被套餐关联,不可删除
            throw new DeletionNotAllowedException(MessageConstant.DISH_BE_RELATED_BY_SETMEAL);
        }
        //删除菜品表中的菜品数据
        for(Long id:ids){
            dishMapper.delete(id);
            dishFlavorMapper.delete(id);
        }
        //删除菜品关联的口味数据
    }

    /**
     * 根据id查询菜品
     * @param id
     * @return
     */
    @Override
    public DishVO getByIdWithFlavor(Long id) {
        //先根据id查询dish中的内容
        Dish dish=dishMapper.getById(id);
        //获取flavor
        List<DishFlavor> flavors=dishFlavorMapper.getByIdWithFlavor(id);
        //复制
        DishVO dishVO=new DishVO();
        BeanUtils.copyProperties(dish,dishVO);
        dishVO.setFlavors(flavors);
        return dishVO;
    }

    @Override
    public void updateWithFlavor(DishDTO dishVO) {
        //先实现dish中的
        Dish dish = new Dish();
        BeanUtils.copyProperties(dishVO,dish);
        dishMapper.update(dish);

        //口味表中的修改
          //先删除原有的口味数据
        dishFlavorMapper.delete(dishVO.getId());
        //获取新的口味数据
        List<DishFlavor> flavors = dishVO.getFlavors();
        if(flavors !=null && flavors.size()>0){
            flavors.forEach(dishFlavor -> dishFlavor.setDishId(dishVO.getId()));
            dishFlavorMapper.insertBatch(flavors);
        }
    }

    /**
     * 条件查询菜品和口味
     * @param dish
     * @return
     */
    public List<DishVO> listWithFlavor(Dish dish) {
        List<Dish> dishList = dishMapper.list(dish);

        List<DishVO> dishVOList = new ArrayList<>();

        for (Dish d : dishList) {
            DishVO dishVO = new DishVO();
            BeanUtils.copyProperties(d,dishVO);

            //根据菜品id查询对应的口味
            List<DishFlavor> flavors = dishFlavorMapper.getByIdWithFlavor(d.getId());

            dishVO.setFlavors(flavors);
            dishVOList.add(dishVO);
        }

        return dishVOList;
    }


}
